When I Remote Start the vehicle it starts & immediately dies, It tries three times & then stops trying, What is going on?

If you attempt to Remote Start the vehicle and the starter cranks the engine but does not start. You may have either an issue with the vehicles immobilizer not receiving valid bypass signal or a poor tach signal. If the vehicle does starts and runs for at least 5 seconds it is likely not an immobilizer issue. Make sure you have a valid tach signal and that the system learned the Tach Signal. In some cases learning the Tach Signal at a higher RPM will resolve this issue. If you suspect you might have a poor tach signal; Find a new source for the tach signal.